www.pudn.com > SJF2443.zip > jtag.h

#ifndef __JTAG_H__ 
#define __JTAG_H__ 
 
#include "ppt.h" 
 
#define LOW 			 '0'                
#define HIGH			 '1' 
    
// Pin Connections 
//   TCK   :DATA[0]   (2)  
//   TDI   :DATA[1]   (3)  
//   TMS   :DATA[2]   (4)  
//   TDO   :STATUS[7] (11) 
 
// Pin Connections 
//   TCK   :DATA[1]   (3)  
//   TDI   :DATA[2]   (4)  
//   TMS   :DATA[3]   (5)  
//   TDO   :STATUS[7] (11) 
 
// old jtag connection 
#define TCK_H		0x01 
#define TDI_H		0x02               
#define TMS_H		0x04 
// new jtag connection 
//#define TCK_H		0x04 
//#define TDI_H		0x08               
//#define TMS_H		0x02 
#define TCK_L		0x00 
#define TDI_L		0x00               
#define TMS_L		0x00 
 
 
#define JTAG_SET(value)	OutputPpt(value) 
#define JTAG_GET_TDO()	( (InputPpt()&(1<<7)) ? LOW:HIGH )  //STATUS7 is read inverted. 		 
 
// JTAG Instruction Definition for S3C2443 
#define EXTEST		"0000"  //LSB...MSB 
#define BYPASS		"1111" 
#define IDCODE		"0111" 
#define SAMPLE_PRELOAD	"1100" 
 
extern int delayLoopCount; 
 
void JTAG_ReadId(void); 
void JTAG_RunTestldleState(void); 
void JTAG_ShiftIRState(char *wrIR); 
void JTAG_ShiftDRState(char *wrDR, char *rdDR); 
void JTAG_ShiftDRStateNoTdo(char *wrDR); 
void Delay(int count); 
 
#endif //__JTAG_H__